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Article updated: 7/6/2012 5:51 AM

Poll Vault: Is this heat wave a result of global warming?

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John Rohlfing takes a drink as he works on the construction of his new home Thursday in North Aurora. He started at 6 a.m. and quit at 11 a.m. because of triple-digit temperatures. Oppressive heat is slamming the middle of the country with record temperatures that aren't going away after the sun goes down.

Associated Press

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There's no debating that it's hot. Blistering hot. But what's the reason? Is it global warming or just a freak extreme? “This is certainly what I and many other climate scientists have been warning about,” said Jonathan Overpeck, professor of geosciences and atmospheric sciences at the University of Arizona. Share your opinion with us in today's Poll Vault.

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